Should I invite my friend to my 19th birthday?

Okay so I LOVE my friend and she is one of my very best friends but the problem is she has borderline personality disorder. Last time I invited her to my birthday with other friends she forgot to take her medicene and lets just say I ended up crying in Disney World.

We have since made up since then and she is like a sister to me but this year I really want to stay at a resort on the beach and invite my closest friends. Now all my friends are friends with eachother except her we were all friends in middle school and I didn't meet her till High School.

Should I just invite her and talk to her before hand (like tell her to make sure she takes her medicene etc) or should I just have a party that is just my middle school friends and do something with her another time? I just dont want her to see pictures and be upset she wasnt invited but I also dont want to invite her and her complain the whole time or get jealous (I understand how she is and I can handle her but my other friends who dont know her or her condition may not)

I just really want to have a stress free birthday and this split between friends is hard.